Synthesis of boron containing lamellar calcium aluminum hydroxy salts were performed at different relative humidities and the behaviour and properties of the lamellar phases were investigated. The following AFm compound could be synthesized in pure form and their properties were determined:

AFm-phase: 3CaO^·Al₂O₃^.CaHBO₃^.nH₂O

With excess boron an Ettringite-compound AFt with the following composition is coexisting in the investigated system:

Ettringite-phase: 3CaO^·Al₂O₃^·2Ca[B(OH)₄]₂^·Ca(OH)₂. 30H₂O

The incorporation of boron in the interlayer of LDH-phases under the influence of OH-ions at different temperatures were investigated. Carbonate was excluded by using a glove box to get definite lattice parameters. Different boron containing AFm-phases using pure phase compositions in the system OH-lamellar AFm phase and the boron containing AFm phase were synthesized. The solid solution between the so called compounds Monoborate and Monohydroxide at different temperatures and different relative humidities with careful control of the different water contents of the lamellar phases was investigated. Boron contents in solution and the uptake in the interlayer of the AFm-phases was studied [13]. The uptake of boron from pure solutions and the newly formed relevant phases with AFm structure and at higher boron contents of the ettringite structure were determined.

在不同的相对湿度下进行了含硼层状钙铝羟基盐的合成，并研究了层状相的行为和性质。以下AFm化合物可以纯净形式合成并确定其性质：

AFm相：3CaO ^· Al ₂ O ₃ ^。碳酸氢钙₃ ^。nH ₂ O

在研究的系统中，与过量的硼共混有以下组成的钙矾石化合物AFt：

钙矾石相：3CaO ^· Al ₂ O ₃ ^· 2Ca [B（OH）₄ ] ₂ ^· Ca（OH）₂。30H ₂ ö

研究了在不同温度下，OH离子对LDH相中间层中硼的结合作用。通过使用手套箱排除碳酸盐以获得确定的晶格参数。使用OH-层状AFm相体系中的纯相组成，合成了不同的含硼AFm相和含硼AFm相。研究了所谓化合物单硼酸盐和一氢氧化物之间在不同温度和不同相对湿度下的固溶体，并仔细控制了层状相的不同含水量。研究了溶液中的硼含量和AFm相夹层中的硼吸收[13]。